#include<stdio.h>

extern long long int suma(long long int a, long long int b);
extern long long int negar(long long int a);
extern unsigned int esMayor(long long int a, long long int b);
extern void* producto(unsigned long long int a, unsigned long long int b);
long long int power(int x, unsigned y); //Ej22

int main(){
	printf("suma: %lld\n",suma(1000000000,-999999999));
	printf("negar: %lld\n",negar(999999999));
	printf("esMayor: %u\n",esMayor(-100000000,999999999));
	printf("producto: %llu\n",*(unsigned long long int*)producto(999999999,1000000000));
	printf("power: %lld\n",power(2,31));
	return 0;
}
